Sony HCD-SHAKE33 - Page 23

HCD-SHAKE33/SHAKE77
23
Switching Regulator Diagnosis Flow (HCD-SHAKE77)
(1) AC Input
(2) 15A/250V AC Fuse
(3) Retifier - 25A600V
(4) PFC MOSFET
(5) PFC Inductor
(6) PFC Diode
(7) Sub Fuse
(8) Sub Switching MOSFET
(9) Sub Transformer
(10) Sub Output Diode
(11) CN4 connector
pin 1: P-cont
pin 2: ACD
pin 3 to 4: GND
pin 5 to 6: 13.5V
(12) LLC Main Fuse
(13) LLC Main Switching MOSFET K18A 60V
(14) LLC Transformer
(15) Main output Diode
(16) CN2 connector
pin1: 17V
pin2 to 4: -VH (-62.5V)
pin5: -VL (-22.5V)
pin6: GND
pin
7: +VL (+22.5V)
pin8 to 10: +VH (+62.5V)
(17) J60 for 13.5V GND
(18) J66 for 13.5V Output
Yes
AC IN
The Power Control signal to SMPS as below voltage?
P-cont
CN4 Pin1:
ECO Mode
Low (0V)
Demo Mode
Low (0V)
Power On
Hi (2.7V-3.3V)
Check whether state of cable and
outlet are normal.
If there are no problem, check
circumference circuit from Main Board.
The SMPS output as below voltage?
CN2 Pin10(+) + CN2 Pin2(-):
Main Output (VH) ECO Mode
Low (0V)
ECO Mode
Low (0V)
ECO Mode
Low (0V)
ECO Mode
CN2 Pin7(+) + CN2 Pin5(-):
Main Output (VL)
M
ain Output (V3)
Sub Output
CN2 Pin1(+) + CN2 Pin2(-):
J66(+) + J60(-): Hi (13.5V
± 0.65V) Hi (13.5V ± 0.65V)
Demo Mode
Low (0V)
Demo Mode
Low (0V)
Demo Mode
Low (0V)
Demo Mode
Hi (125V
± 6.25V)
Power On
Power On
Hi (45V
± 2.25V)
Power On
Hi (14V
± 0.07V)
Power On
Hi (13.5V
± 0.65V)
Check and Replace SMPS parts
Main No output (VH, VL, V3)
-> F3,Q1,Q2,Q5,Q6,IC3,Q13
Sub No output
-> F4,Q17,IC2
Main & Sub No output
->F1,IC1,BD1,Q8,Q9,Q10,Q11,D9
Yes
END
No
No
(10)
(11)
(18)
(17)
(9)
(3)
(4)
(5)
(12)
(13)
(14)
(15)
(16)
(7)
(8)
(6)
(1)
(2)